Description
Hioki CM3289 Clamp Meter – Precision in Every Measurement
The Hioki CM3289 Clamp Meter is a next-generation True RMS instrument engineered for accurate current measurement and reliable performance across diverse electrical applications. Designed with a thinner, more compact clamp core, it enables effortless access to confined wiring environments, making it ideal for technicians working in densely packed electrical panels.
Unmatched Measurement Accuracy
Equipped with True RMS capability, the CM3289 ensures accurate readings even for distorted waveforms from inverter-driven or switching power systems. Its precision extends across a wide AC current range (42.00 A to 1000 A) and an impressive temperature tolerance from -25°C to 65°C, ensuring dependable performance in both laboratory and field conditions.
Enhanced Flexibility with Optional Sensor
When paired with the CT6280 flexible current sensor, the meter expands its measurement capacity up to 4199 A, allowing technicians to capture readings from thick or bundled cables with ease. This flexibility makes it a versatile choice for industrial, commercial, and maintenance applications.
Compact, Durable, and User-Friendly
Built for on-site professionals, the CM3289 combines the portability of a card tester with the full capabilities of a clamp meter. It measures current, voltage, resistance, and continuity—all from a lightweight, pocket-sized device. Engineered to withstand drops up to one meter, it’s ideal for daily use in demanding environments.
With its backlit LCD display, ergonomic operation, and durable design, the Hioki CM3289 stands out as a dependable tool that ensures measurement accuracy, operational comfort, and long-term reliability.
Technical Specifications Table
| Parameter | Details |
| Model | Hioki CM3289 True RMS AC Clamp Meter |
| AC Current Range | 42.00 to 1000 A (True RMS, 40 Hz–1 kHz) |
| DC Voltage Range | 420.0 mV to 600 V, 5 ranges |
| AC Voltage Range | 4.200 V to 600 V (45–500 Hz, True RMS) |
| Resistance Range | 420.0 Ω to 42.00 MΩ, 6 ranges |
| Crest Factor | 2.5 or less at 2500 counts |
| Operating Temperature | -25°C to 65°C |
| Display | LCD, 4199 digits, refresh rate 400 ms |
| Jaw Diameter | φ 33 mm |
| Power Supply | Coin-type lithium battery (CR2032 × 1) |
| Continuous Use Time | Approx. 70 hours |
| Drop Resistance | 1 m onto concrete |
| Dimensions | 57 mm (W) × 181 mm (H) × 16 mm (D) |
| Weight | 100 g |
| Optional Sensor (CT6280) | 4199 A AC, φ 130 mm, ±3.0 % rdg. ±5 dgt. |
| Included Accessories | Carrying Case, Test Leads, Battery, Manual |
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